diff --git a/galleries/users_explain/animations/animations.py b/galleries/users_explain/animations/animations.py
index 2711663196f2..a0669956ab81 100644
--- a/galleries/users_explain/animations/animations.py
+++ b/galleries/users_explain/animations/animations.py
@@ -251,3 +251,8 @@ def update(frame):
 #            writer="imagemagick", extra_args=["-quality", "100"])
 #
 # (the ``extra_args`` for *apng* are needed to reduce filesize by ~10x)
+#
+# Note that *ffmpeg* and *imagemagick* need to be separately installed.
+# A cross-platform way to obtain *ffmpeg* is to install the ``imageio_ffmpeg``
+# PyPI package, and then to set
+# ``rcParams["animation.ffmpeg_path"] = imageio_ffmpeg.get_ffmpeg_exe()``.